![Cell Size Distributions of Soil Bacterial and Archaeal](http://s1.studyres.com/store/data/015270976_1-a15cf9daf27e6d67bb0d4c254d2d7dd7-300x300.png)
Cell Size Distributions of Soil Bacterial and Archaeal
... Soil sample collection and processing. Surface mineral soils (0- to 5-cm depth, no O-horizon material) were collected from a native grassland (tallgrass prairie) in eastern Kansas, a humid deciduous forest in Connecticut, and a cultivated agricultural field located at the Kellogg Biological Station ...
... Soil sample collection and processing. Surface mineral soils (0- to 5-cm depth, no O-horizon material) were collected from a native grassland (tallgrass prairie) in eastern Kansas, a humid deciduous forest in Connecticut, and a cultivated agricultural field located at the Kellogg Biological Station ...
Promiscuous partnering and independent activity of MexB, the
... 1-(4-trimethylammoniumphenyl)-6-phenyl-1,3,5-hexatriene p -toluenesulfonate; TPP, tetraphenylphosphonium. ...
... 1-(4-trimethylammoniumphenyl)-6-phenyl-1,3,5-hexatriene p -toluenesulfonate; TPP, tetraphenylphosphonium. ...
Interaction between Cell Wall and Plasma Membrane via RGD Motif
... Our previous reports suggested that the plant cell wall plays crucial roles in the recognition of pathogens and in determination of plant-pathogen specificity (Kiba et al. 1995, 1996, 1997, Shiraishi et al. 1997, 1998). However, the mechanism of signal transmission from the cell wall to plasma membr ...
... Our previous reports suggested that the plant cell wall plays crucial roles in the recognition of pathogens and in determination of plant-pathogen specificity (Kiba et al. 1995, 1996, 1997, Shiraishi et al. 1997, 1998). However, the mechanism of signal transmission from the cell wall to plasma membr ...
Diffusion and Osmosis Investigations
... organelle membranes, are selectively permeable. Membranes are phospholipid bilayers containing embedded proteins; the phospholipid fatty acids limit the movement of water because of their hydrophobic characteristics. The cellular environment is aqueous, meaning that the solvent in which the solutes, ...
... organelle membranes, are selectively permeable. Membranes are phospholipid bilayers containing embedded proteins; the phospholipid fatty acids limit the movement of water because of their hydrophobic characteristics. The cellular environment is aqueous, meaning that the solvent in which the solutes, ...
Subtype-specific regulation of equilibrative nucleoside transporters
... Specific transport proteins are required for the transfer of hydrophilic nucleosides across cell membranes. These transporters are critical for the scavenging of nucleosides by cells lacking de novo purine biosynthesis, and for regulation of adenosine concentrations in the vicinity of extracellular ...
... Specific transport proteins are required for the transfer of hydrophilic nucleosides across cell membranes. These transporters are critical for the scavenging of nucleosides by cells lacking de novo purine biosynthesis, and for regulation of adenosine concentrations in the vicinity of extracellular ...
Human Systems and Homeostasis
... from other neurons. Humans, like almost all multicellular organisms, are collections of specialized cells that work together. These cells arise from a single cell, the zygote, which is formed by the union of an egg and sperm. The zygote divides and differentiates into more than 200 different types ...
... from other neurons. Humans, like almost all multicellular organisms, are collections of specialized cells that work together. These cells arise from a single cell, the zygote, which is formed by the union of an egg and sperm. The zygote divides and differentiates into more than 200 different types ...
Human Corneal Endothelial Cells Expanded In Vitro Are a Powerful
... to Disruption of Cell-Cell Junctions Is the Obstacle for in Vitro Growth of HCECs Contact-inhibition is present in non-transformed normal cells when neighboring cells are in contact with one another. This fact causes low regenerative capability of in vivo human corneal endothelial cells. The convent ...
... to Disruption of Cell-Cell Junctions Is the Obstacle for in Vitro Growth of HCECs Contact-inhibition is present in non-transformed normal cells when neighboring cells are in contact with one another. This fact causes low regenerative capability of in vivo human corneal endothelial cells. The convent ...
Multipotent stem cells from the dorsal aorta
... developing tissues, vessel-associated progenitors, which possibly originate from a common ancestor (a ‘mesoangioblast’, rather than an hemo-angioblast) would leave the vessel and adopt the fate of the tissue where the vessel has entered (Bianco and Cossu, 1999). This fate choice would depend upon lo ...
... developing tissues, vessel-associated progenitors, which possibly originate from a common ancestor (a ‘mesoangioblast’, rather than an hemo-angioblast) would leave the vessel and adopt the fate of the tissue where the vessel has entered (Bianco and Cossu, 1999). This fate choice would depend upon lo ...
Foundations - Cells, organelles and cell boundaries
... bound) and organelles within the cell. These compartments allow the separation/specialization of processes within the cell. There also exist within each of these physical compartments, functional compartments where specific processes may occur or are restricted. This lecture is also an introduction ...
... bound) and organelles within the cell. These compartments allow the separation/specialization of processes within the cell. There also exist within each of these physical compartments, functional compartments where specific processes may occur or are restricted. This lecture is also an introduction ...
Antigen-Presenting Cells Are Stratified Within Normal Human
... days.22 In our study, all samples were fixed within 2 days of storage, and all tissue was kept at 48C at all times until fixation in an attempt to minimize any decline in APC density. The function of corneal APCs remains an area of active investigation. In a murine model of HSV-1 corneal infection, ...
... days.22 In our study, all samples were fixed within 2 days of storage, and all tissue was kept at 48C at all times until fixation in an attempt to minimize any decline in APC density. The function of corneal APCs remains an area of active investigation. In a murine model of HSV-1 corneal infection, ...
Mechanism of Phagocytosis in Phagocytosis is Mediated by
... and simple assays were developed to measure endocytotic uptake . For pinocytosis, FITCdextran was found to be a suitable fluid-phase marker; FITC-bacteria, latex beads, and erythrocytes were used as phagocytotic substrates . Ingested material was isolated in one step by centrifuging through highly v ...
... and simple assays were developed to measure endocytotic uptake . For pinocytosis, FITCdextran was found to be a suitable fluid-phase marker; FITC-bacteria, latex beads, and erythrocytes were used as phagocytotic substrates . Ingested material was isolated in one step by centrifuging through highly v ...
ANISOTROPIC EXPANSION OF THE PLANT CELL WALL
... and processing speed compared to manual methods. An alternative approach for characterizing the velocity field was developed by Hejnowicz & Romberger (1984). The approach, called the growth tensor, is based on the strain rate tensor, which Silk & Erickson (1979), using the tools of continuum mechanic ...
... and processing speed compared to manual methods. An alternative approach for characterizing the velocity field was developed by Hejnowicz & Romberger (1984). The approach, called the growth tensor, is based on the strain rate tensor, which Silk & Erickson (1979), using the tools of continuum mechanic ...
Neurogenesis in Postnatal Mouse Dorsal Root Ganglia
... and also experience increases in NGF following axotomy (35). Second, NGF- and serum-containing media are commonly used for DRG culture (7), and we sought to replicate these conditions. BrdU was also added to the culture medium to identify proliferating cells. In these experiments, primary DRG cultur ...
... and also experience increases in NGF following axotomy (35). Second, NGF- and serum-containing media are commonly used for DRG culture (7), and we sought to replicate these conditions. BrdU was also added to the culture medium to identify proliferating cells. In these experiments, primary DRG cultur ...
Two-step process for photoreceptor formation inDrosophila
... few cases, six or less PRCs were present. This could be accounted for by photoreceptor loss: older ¯ies exhibited dramatic pathology of some PRCs reminiscent of degeneration (Fig. 2h). In wild-type ¯ies, the six outer PRCs, R1±R6, express rhodopsin1 (rh1) and mediate image formation and dim light vi ...
... few cases, six or less PRCs were present. This could be accounted for by photoreceptor loss: older ¯ies exhibited dramatic pathology of some PRCs reminiscent of degeneration (Fig. 2h). In wild-type ¯ies, the six outer PRCs, R1±R6, express rhodopsin1 (rh1) and mediate image formation and dim light vi ...
ATPase in the plasma membrane of HeLa cells
... (A) Detection of isoform-specific mRNA in HeLa S3 cells by RT-PCR. The total RNA isolated from HeLa S3 cells used in this study was subjected to RT-PCR to examine the expression of four α-isoforms (α1-α4) and four βisoforms (β1-β4) of Na+/K+-ATPase. Primers used were designed to amplify an approxima ...
... (A) Detection of isoform-specific mRNA in HeLa S3 cells by RT-PCR. The total RNA isolated from HeLa S3 cells used in this study was subjected to RT-PCR to examine the expression of four α-isoforms (α1-α4) and four βisoforms (β1-β4) of Na+/K+-ATPase. Primers used were designed to amplify an approxima ...
The Science of Candy!
... Add some candy and allow the color to dissolve. You may test as many colors as you like, but be sure to only use one color of candy in each water puddle. Dip the edge of the coffee filter (or paper towel or napkin) into the colored water. It works best if you fold the paper so that you can dip ...
... Add some candy and allow the color to dissolve. You may test as many colors as you like, but be sure to only use one color of candy in each water puddle. Dip the edge of the coffee filter (or paper towel or napkin) into the colored water. It works best if you fold the paper so that you can dip ...
Primary and Secondary B-Cell Responses to
... compared to intact virus particles [23]. Infected DCs also prime helper T cells which deliver cognate help to B cells at the border of T-cell zone and B-cell follicle [24]. After proliferating in perifollicular region, primed B cells proceed into either the extrafollicular pathway, which generates s ...
... compared to intact virus particles [23]. Infected DCs also prime helper T cells which deliver cognate help to B cells at the border of T-cell zone and B-cell follicle [24]. After proliferating in perifollicular region, primed B cells proceed into either the extrafollicular pathway, which generates s ...
ID helix-loop-helix proteins - Journal of Cell Science
... comprises >200 members, which have been identified in organisms from yeast to man (reviewed in Littlewood and Evan, 1995; Massari and Murre, 2000). In metazoa, HLH proteins function in the coordinate regulation of gene expression, orchestrating cell cycle control, cell lineage commitment and cell di ...
... comprises >200 members, which have been identified in organisms from yeast to man (reviewed in Littlewood and Evan, 1995; Massari and Murre, 2000). In metazoa, HLH proteins function in the coordinate regulation of gene expression, orchestrating cell cycle control, cell lineage commitment and cell di ...
NIH Public Access
... The decision for progenitors to differentiate is made at the G1 phase of the cell cycle where Dtype cyclins and cyclin-dependent kinases inhibitors (CKIs) play an important role in regulating cell cycle exit. The CKIs regulate cell cycle progression by blocking phosphorylation of the retinoblastoma ...
... The decision for progenitors to differentiate is made at the G1 phase of the cell cycle where Dtype cyclins and cyclin-dependent kinases inhibitors (CKIs) play an important role in regulating cell cycle exit. The CKIs regulate cell cycle progression by blocking phosphorylation of the retinoblastoma ...
Studying Cell–Surface Interactions In Vitro: A Survey of
... paramount importance. Besides their mechanical importance for processes like cell migration during development and wound healing, they provide the basis for inside-out and outside-in signaling. The non-cellular extracellular environment, summarized as the extracellular matrix (ECM), is a complex mul ...
... paramount importance. Besides their mechanical importance for processes like cell migration during development and wound healing, they provide the basis for inside-out and outside-in signaling. The non-cellular extracellular environment, summarized as the extracellular matrix (ECM), is a complex mul ...
Biology XI Support Material 2016
... 1-Concentrate on minute points of the chapter keeping very short answer& short answer type questions in mind. 2- Emphasise on concepts. ...
... 1-Concentrate on minute points of the chapter keeping very short answer& short answer type questions in mind. 2- Emphasise on concepts. ...
Is the Cytoskeleton Necessary for Viral Replication?
... microtubule has β-tubulin exposed while the (-) end has α-tubulin exposed. The (-) end is almost always capped, so growth normally occurs from the (+) end. The microtubule (+) end usually points towards the plasma membrane where it can interact with the actin cortex (Radtke et al., 2006). The microt ...
... microtubule has β-tubulin exposed while the (-) end has α-tubulin exposed. The (-) end is almost always capped, so growth normally occurs from the (+) end. The microtubule (+) end usually points towards the plasma membrane where it can interact with the actin cortex (Radtke et al., 2006). The microt ...
BE WHEN THEY GROW UP? Lessons from Epidermal Patterning in
... transcription factors. Second, the timing and location of differentiation is often regulated by both long-range hormonal signals and local cell-cell signaling. Third, differentiating cells often either stop cycling mitotically or enter a modified cell cycle. The plant epidermis is an excellent tissu ...
... transcription factors. Second, the timing and location of differentiation is often regulated by both long-range hormonal signals and local cell-cell signaling. Third, differentiating cells often either stop cycling mitotically or enter a modified cell cycle. The plant epidermis is an excellent tissu ...
Cell culture
![](https://commons.wikimedia.org/wiki/Special:FilePath/Cell_Culture_in_a_tiny_Petri_dish.jpg?width=300)
Cell culture is the process by which cells are grown under controlled conditions, generally outside of their natural environment. In practice, the term ""cell culture"" now refers to the culturing of cells derived from multicellular eukaryotes, especially animal cells, in contrast with other types of culture that also grow cells, such as plant tissue culture, fungal culture, and microbiological culture (of microbes). The historical development and methods of cell culture are closely interrelated to those of tissue culture and organ culture. Viral culture is also related, with cells as hosts for the viruses. The laboratory technique of maintaining live cell lines (a population of cells descended from a single cell and containing the same genetic makeup) separated from their original tissue source became more robust in the middle 20th century.